题目内容：

The movie Big Hero 6 has delighted audiences of all ages and the biggest reason for its success is the film's superhero, Baymax.

Baymax was made by Hiro's older brother, Tadashi. He wanted to help a lot of people in need and Baymax was how he would do it. At first Baymax was used as a personal healthcare assistant robot to heal the sick and injured. If you are his "patient", he will tell you, "There, there, it will be all right" and he won't leave you alone until you're well again.

After Tadashi died, Hiro upgraded Baymax and changed it into a rocket-fueled fighting machine who can fly above the city of San Fransokyo and take out any enemy. The robot carries Tadashi's selfless personality and through him, Hiro can still keep a little piece of his brother always.

There are some cool things about Bymax. As a robot, Bymax feels no pain, and he carries some special abilities. Bymax can fix himself if necessary. All he needs is some Scotch Tape. The funniest thing about Baymax may be his little footsteps. With a fat body and tiny legs, the superhero has to say "I am not fast," But that doesn't stop him from heading out into the world.

1.Is Big Her0 6 a successful movie?

 

2.Who was Bymax made by?

 

3.What was Bymax used as at first?

 

4.What does Bymax need if he wants to fix himself?